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June 1, 2012 - Severe Thunderstorms/Tornadoes Event


Kmlwx

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Sweet picture Disc - where is that from?

Thanks. :) It's a screencap from a video I took earlier as the squall line moved through. I'll post the full video later on, but that's overlooking Roanoke, Virginia from the Mill Mountain overlook.

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The reports I've seen (I could be wrong here) have been relatively minor though. Storms have had trouble maintaining themselves and even the supercells that have developed have produced little severe weather, surprisingly.

CAPE probably was too marginal which coincides with meager ML lapse rates I suppose. Low levels were great.

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Bust I think. Low level mesocyclones have looked impressive from time to time but none of them seem to be producing. As the discrete cells are merging into clusters and line segments the threat continues to diminish though spinups on QLCS are possible.

Seems like the 0-1km shear and low LCLs are conducive... but storms themselves seem to be having trouble maintaining long-lasting strong updrafts (marginal CAPE FTL?).

I don't know if it's a CAPE issue...low level CAPE in particular seems to be more than enough. And LCL's definitely aren't a problem. If anything I would argue that marginal low level shear may be holding this back so far. There is a lot of turning but the flow isn't very strong...0-1 km helicities have been running around 150 give or take...not terrible but on the lower end for a lot of tornadoes at least from my perspective. That being said, let's see how the next couple hours go.

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CAPE probably was too marginal which coincides with meager ML lapse rates I suppose. Low levels were great.

Just seems that a bunch of storms that developed had low level rotation but the storms crapped out after a while. So yeah I don't think it was a low level shear issue though it could have been worse. SBCAPE in most of MD is around 1000 j/kg now... certainly not very impressive.

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Love this shot Disc. Great view from there, love having the overlooks close by Nicely done :thumbsup:

:D Thanks! It was very neat to watch it engulf the valley! I'll post the video a little later so it doesn't slow the thread down right now.

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I don't know if it's a CAPE issue...low level CAPE in particular seems to be more than enough. And LCL's definitely aren't a problem. If anything I would argue that marginal low level shear may be holding this back so far. There is a lot of turning but the flow isn't very strong...0-1 km helicities have been running around 150 give or take...not terrible but on the lower end for a lot of tornadoes at least from my perspective. That being said, let's see how the next couple hours go.

NRN MD and PA where the shear was strongest but just enough CAPE had the best looking storms. Some nice cells there.

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Just seems that a bunch of storms that developed had low level rotation but the storms crapped out after a while. So yeah I don't think it was a low level shear issue though it could have been worse. SBCAPE in most of MD is around 1000 j/kg now... certainly not very impressive.

Probably needed a bit more of a CAP. Then everything would have worked out , cells more discreet with higher cape building up.

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Just to your north was me :)

Saw some slow rotation in the clouds right above downtown frederick as I was driving through. Rain rates were torrential, but nothing dropped.

I got a pic of it a few pages back. I didn't see strong rotation either...just pretty slow. 7th street area lost some power.

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